No. It’s a myth, just like the Loch Ness Monster and that bit about oysters improving my sex life (other people’s I can’t comment on).

Don’t know how the story got started, but some people contend that whisky causes the raw mollusks to turn to stone or become pickled in the stomach. Some go so far as to suggest the danger applies to all brown spirits and even spirits in general. As a fan of cold gin martinis with oysters, I can personally attest that the latter fear is unfounded.